Not really sure what you’re trying to do, but you can use a program like Firebug or Chrome Developer Tools to Inspect your code to pinpoint specific areas and check the applied CSS, search for specific code snippets, etc.

Sorry, I’m still not clear, but I think you’re referring to the responsive media queries for smaller screens. I don’t recommend removing them because it will break the site for mobile devices, but that will ensure the content does not reflow. They’re located toward the bottom of the stylesheet, within @media screen declarations.